Ah sorry - obviously that's what you wanted, and you're probably asking me because as long as I bought my copy as an Australian (rather than as an American - which I sometimes do), then it's probably the same one that would be available to you in the UK.
I bought the Vintage edition published in 2009. I could have just borrowed the same edition in paperback from my local library for nothing, but I was being supremely lazy - which is one of the reasons I definitely will borrow the paperback for Lolita. My credit card has become grumpy.
I can be a little less fussy about formatting, especially as the book has already gone through one Calibre conversion when I liberated it from Play, but in my PW it has a working table of contents, the formatting looks OK and I can't recall hideous scanning errors.
Of course, you do a great deal of proof-reading, so maybe my OK is your terrible, but it seems quite good to me.